Anthropogenic impacts on the nitrate pollution in an urban river: Insights from a combination of natural-abundance and paired isotopes

环境科学 硝酸盐 氮同位素 反硝化 δ15N 丰度(生态学) 污染 河岸带 同位素分析 土壤水分 水文学(农业) 环境化学 生态学 稳定同位素比值 δ13C 氮气 化学 土壤科学 地质学 物理 有机化学 栖息地 岩土工程 生物 量子力学
作者
Wenjing Guo,Dong Zhang,Wenshi Zhang,Shen Li,Ke Pan,Hao Jiang,Quanfa Zhang
出处
期刊:Journal of Environmental Management [Elsevier BV]
卷期号:333: 117458-117458 被引量:4
标识
DOI:10.1016/j.jenvman.2023.117458
摘要

Urban rivers are often characterized by high nitrate (NO3-) loadings. High NO3- loadings cause water quality and ecological damages, which undermines the sustainable development of cities. To date, the drivers of these high NO3- loadings remain unclear. This study, for the first time, integrated natural-abundance isotopes (δ15 N/δ18O-NO3- and δD/δ18O-H2O) and 15N-pairing techniques to comprehensively reveal the anthropogenic impacts on the NO3- pollution in an urban river. Natural-abundance isotopes suggested that in both the wet and dry seasons, the NO3- was predominantly from the conservative mixing of different sources, and biological NO3- removal was minor. The 15N-pairing experiments supported the natural-abundance isotope data, quantitatively showing that in-soil nitrification was prevailing, while NO3- removal processes (denitrification, anammox, and dissimilatory NO3- reduction to ammonium) were weak. A Bayesian isotope-mixing model showed that soil sources (soil organic nitrogen and chemical fertilizer) dominated the NO3- in the upper reaches, while in the lower reaches, the impermeable riparian zone short-circuited the access of soils to the river. Here, the wastewater treatment plants became a significant source of NO3-. This study quantitatively revealed the drivers of high NO3- loadings in an urban river, and generated important clues for effective NO3- pollution control and remediation in urban rivers.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
云泥完成签到,获得积分10
刚刚
刚刚
隐形曼青应助okface采纳,获得10
1秒前
zhang完成签到,获得积分10
2秒前
hopen完成签到 ,获得积分10
3秒前
丘比特应助SS采纳,获得10
5秒前
月亮moon完成签到,获得积分10
5秒前
6秒前
充电宝应助qqq采纳,获得10
9秒前
顾矜应助lihan采纳,获得10
9秒前
爆米花应助周em12_采纳,获得10
10秒前
11秒前
三物完成签到 ,获得积分10
12秒前
jolt发布了新的文献求助10
13秒前
15秒前
15秒前
16秒前
momo发布了新的文献求助10
17秒前
量子星尘发布了新的文献求助30
17秒前
18秒前
19秒前
19秒前
善学以致用应助笃定采纳,获得30
20秒前
SS发布了新的文献求助10
22秒前
22秒前
ZZZ发布了新的文献求助10
22秒前
Justtry发布了新的文献求助20
24秒前
24秒前
顾矜应助momo采纳,获得10
25秒前
25秒前
hnlgdx发布了新的文献求助20
25秒前
27秒前
重要冷之完成签到,获得积分20
27秒前
27秒前
30秒前
VV完成签到,获得积分10
30秒前
ccalvintan发布了新的文献求助10
31秒前
蛋挞发布了新的文献求助10
32秒前
小马甲应助SS采纳,获得10
35秒前
XX完成签到,获得积分10
38秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989297
求助须知:如何正确求助?哪些是违规求助? 3531418
关于积分的说明 11253893
捐赠科研通 3270097
什么是DOI,文献DOI怎么找? 1804884
邀请新用户注册赠送积分活动 882087
科研通“疑难数据库(出版商)”最低求助积分说明 809158